Gaseous fuel



UNITED" STATES PATENT OFFICE.

JAMES R. ROSE, OE EDGEWORTH, PENNSYLVANIA, AND JOHN HARRIS, OF LAKEWOOD, OHIO, ASSIGNORS TO CARBO-OXYGEN COMPANY, OF PITTSBURGH, PENNSYLVANIA.

'A CORPORATION OF DELAWARE.

GASEOUS FUEL.

No Drawing.

To all whom it may clmcenn:

Be it known that we, (1) JAMES R. Rosa, (2) JOHN HARRIS, citizens of the United States, residing at '(1) Edgeworth, (2)Lakewood, in the county of (l) Allegheny, (2) Cuyahoga, and State of -(1) Pennsylvania, (2) Ohio, have invented a certain new and useful Improvement in Gaseous Fuel, of which the following is a full, clear, and exact description.

This invention relatesto gaseous fuel, and more particularly to a fuel which is particularly useful for the purpose of cutting metals with great rapidity, where extreme cleanness of cutting is not essential. A use for which our gas is particularly well suited is for cutting scrap iron.

It has been proposed heretofore to mix with hydrogen, gases such as illuminating gas and carbon monoxide, for the purpose of imparting visibility to the cone within the flame produced by the burning of the hydrogen and for certain kinds'of cutting and welding. As pointed out hereinbefore, it is the purpose of this invention to produce a which will enable the cutting operation to be performed with greater ra idity than can be realized by the aforesai mixtures.

, For this purpose we form a mixture of methwane and butane with hydrogen in the proportions of from 24 to 121}% by volume each of such methane and butane to the hydrogen constituents. This gas has a relafiively high carbon content, which materially increases the flame volume and heat units over those obtainable by the combustion in a blow-pipe of hydrogen alone with oxygen, and also produces in the flame a visible oriluminous cone which enables the proportionsof the gases to be conveniently adjusted and the flame to be applied efficiently to the work.

The carbon content of our gaseous mixture is lower than that required for operating on heavy masses of metal and for cutting Specification of Letters Patent.

Application filed December 26, 1919.

Patented Jan. 24, 1922.

Serial No. 347,462.

cast iron and steel, and corroded, dirty and slaggy iron and steel-in which operations a large flame volume and high units are essential. However, our gaseous mixture is capable of cutting with much greater rapidity than can gases having a higher carbon content.

Calculations published in 1908, the flame temperature produced by the combustion of the aforesaid gases will be above 3200 C., and the variations in the'percentages of the said gases will cause the following "ariations in the not B. T. U. per cubic foot of mixture and in the cubic feet of oxygen required for the combustion of a cubic foot of such mixture:

No. 1 mixture, 95% H. with 2-.}% each of butane and methane; net B. T. U.s 383; cu. ft. of oxygen .687.

No. 2 mixture, 75% H. with 121 92) each of butane and methane; net B. T. U.s 743; cu. ft. of oxygen 1.437.

Having thus described our invention, what we claim is y i l. A gas for cuttin Welding and heating purposes consisting o a mixture of methane and butane with hydrogen in the proportions of from 2%%. to 12%% by volume each of methane and butane to hydrogen.

2. A gas for cutting, welding and heating purposes consisting of a mixture of methane and butane with hydrogen in proportions not substantially less than 5% by volume of such combined gases to the hydrogen and not materially more than 25% of such combined gases to the hydrogen, the methane and butane being present in the proportions of at least 2%% each in such mixture.

In testimony whereof, we hereunto afiix our signatures.

JAMES R. ROSE. JOHN HARRIS.

According to Richards on Metallurgical. 

